2. EXPERIMENTAL PROCEDURE: We first stuck a rod in the center of the table to stabilize the scale, took a plain measurement to make sure it was starting balanced. With a string attached, we measured the weight of 3 different size aluminum cylinders once on the scale and another submerged in water. Then repeated the process, this time submerged in ethanol. Once we got the readings, we needed to solve for volume (V=pie(radius^squared)(height)) and buoyancy (B= W-W`) for each cylinder. This for the first part of the experiment, the second part replaced the cylinders for 4 unknown objects. So we repeated the process of the experiment and calculated buoyancy to compare our found density to Archimedes Principal that helped us determine the actual substance of our unknown objects.
3. RESULTS TABLE I TABLE II DIFFERENT LIQUIDS WATER ETHANOL CYLINDER ID Vo W W` B W` B B H K 6.93 m 11.5 g 18.2 g 6.7 N 12.9 m 23.2 g 36.1 g 12.8 N 19.2 m 33.0 g 53.4 g 20.4 N 13.0 g 5.20 N 25.5 g 10.5 N 37.0 g 16.4 N METHOD ARCHIMEDES PRINCIPLE DENSITY DEFINITION OBJECT ID W W` Vo DENSITY DENSITY SUBSTANCE U W X Y 344.5 314 31.6 251.5 220 32.1 286 239.1 31.7 87.5 55.5 29.8 11.3 11.7 Lead Iron Zinc Aluminum 8 7.8 6.1 8.8 2.7 2.9
Graphs for cylinder points Graph I : Water Graph II : Ethanol
4. DISCUSSION: For the first part of the experiment, we found that our measurements experimental values of the fluid density were slightly off from the accepted one. We concluded that the possible
- Summer '20
- Buoyancy, Archimedes